code: def test_objectmapper(self):
      df = pdml.ModelFrame([])
      self.assertIs(
          df.multiclass.OneVsRestClassifier,
          multiclass.OneVsRestClassifier,
      )
      self.assertIs(
          df.multiclass.OneVsOneClassifier,
          multiclass.OneVsOneClassifier,
      )
      self.assertIs(
          df.multiclass.OutputCodeClassifier,
          multiclass.OutputCodeClassifier,
      )
  
file_path: pandas-ml/pandas_ml/skaccessors/test/test_multiclass.py
imports: import pytest
  import sklearn.datasets
  import sklearn.multiclass
  import sklearn.svm
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 1 for calling the TestMultiClass obj's underlying member method code with example usage: obj.test_objectmapper() without return types